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95 Mercury 175 EFI 2.5 issues
#11665658
06/14/16 02:46 AM
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Joined: Apr 2015
Posts: 243
Cole P
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Outdoorsman
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Got a new (to me) boat, a 1995 ranger 461vs w/ Merc 175 EFI. It has a new power head, low hours, garage kept, and it's spotless under the cowling. When I bought the boat, it started first turn and ran great and did so the first few outings. My issue is it will not start unless I cold start it and let it warm up. Once it is started it idles fine and runs top. When I get to my spot and fish for a while, it has to be cold started again to get her going most of the time. When I do start it, it is smoking a lot, and eventually goes away after burning off. The only thing I have done is added a gallon of oil to it to top it off, otherwise it's the same as when I got it. Double oil or too much oil in the case? What do y'all think?
Last edited by Cole P; 06/14/16 01:35 PM.
Cole Porter
Private Water Fishing P: (214) 871-0044 C: (214) 460-7630 E: cporter@privatewaterfishing E: info@privatewaterfishing
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11665669
06/14/16 02:49 AM
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Joined: Feb 2006
Posts: 3,773
bronco71
TFF Team Angler
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TFF Team Angler
Joined: Feb 2006
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I'm sure this isn't it, but did you add the correct kind of oil?
1987 Nitro MX185/Mercury Black Max 150 1999 Triton TX21/225 Mercury Optimax
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11665691
06/14/16 02:55 AM
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Joined: Apr 2015
Posts: 243
Cole P
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Yup, Merc 2-Stroke Syn TC-W3
Cole Porter
Private Water Fishing P: (214) 871-0044 C: (214) 460-7630 E: cporter@privatewaterfishing E: info@privatewaterfishing
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11665898
06/14/16 09:31 AM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
Joined: Nov 2006
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My issue is it will not start unless I cold start it and let it warm up. ??? this problem just show up?.. oiler still intact?.. what do you do "different" with cold start and/or "normal" start?.. does this every time its started, even after its been ran and warmed up?.. motor run ok (idle, mid, wfo) other than this "starting" issue?... there's several things ta think of ona computer!.. not being able ta "touch" it makes for a guessin' game... first thing comes ta mind is tpi but could be few "other things".. do you have an oem manual?
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11666138
06/14/16 01:42 PM
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Joined: Apr 2015
Posts: 243
Cole P
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Yeah I guess you could say it just showed up. Oiler seems to be intact, when I drop it in the water I have to cold start the engine to get it running. It runs fine after I cold start it, but I can go to a spot, shut the engine down for 30 min; get ready to leave and try to start it and it won't start. So now I'm cold starting it again and it'll start and I'll have to repeat this process every time I stop to fish somewhere. Every time I cold start it, it's smoking pretty well for about 5 min or so. Otherwise the engine idles great, runs really good, have no problems other than getting her started.
Cole Porter
Private Water Fishing P: (214) 871-0044 C: (214) 460-7630 E: cporter@privatewaterfishing E: info@privatewaterfishing
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11666213
06/14/16 02:18 PM
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Joined: Nov 2006
Posts: 2,848
TLW
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Extreme Angler
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what do ya do different with what ya call "cold start" as opposed ta a normal start?
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11666875
06/14/16 06:38 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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cold start meaning you are choking it? by pushing in the key?
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11667027
06/14/16 07:40 PM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
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steve, he can't, pushin' tha key does nothin' unless someone has made tha modified wirin' change!.. thats why i was askin' jus what ya can do any different for a "cold start"?
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: TLW]
#11667302
06/14/16 09:57 PM
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Joined: Feb 2006
Posts: 3,773
bronco71
TFF Team Angler
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steve, he can't, pushin' tha key does nothin' unless someone has made tha modified wirin' change!.. thats why i was askin' jus what ya can do any different for a "cold start"? ?? Mine is factory stock and pushing in the key activates the enricher and makes a huge difference....to the point of flooding the motor if it is held too long.
1987 Nitro MX185/Mercury Black Max 150 1999 Triton TX21/225 Mercury Optimax
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: bronco71]
#11667518
06/15/16 12:01 AM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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steve, he can't, pushin' tha key does nothin' unless someone has made tha modified wirin' change!.. thats why i was askin' jus what ya can do any different for a "cold start"? ?? Mine is factory stock and pushing in the key activates the enricher and makes a huge difference....to the point of flooding the motor if it is held too long. EFI?
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11667550
06/15/16 12:19 AM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
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several years of tha little motor (2.4/2.5) efi"s, including tha '95 is only activated when tha "start" circuit is energized... if not, its been "fixed" by someone knowing what they are doin'..... you can tell by lookin' at tha start solenoid.. there will be "two" yellow/red wires on tha same pole.. one is for start comin' from tha motor harness and tha other comes from tha ecu harness.. it "squirts a coupla injectors" every time start is engaged... in order for tha "push key" to enrich tha efi motor you have to disconnect tha yellow/red from tha ecu from tha soleniod and connect it to tha yellow/black comin' outta tha motor harness.... jus like a carb motor... tha yellow/black is tha only wire energized by pushing tha key....
thats jus "one" of tha reasons tha efi (in good tune) starts so much easier than tha carb.
Last edited by TLW; 06/15/16 03:31 PM.
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11667618
06/15/16 12:46 AM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
Joined: Nov 2006
Posts: 2,848 |
justa a note... on efi's most don't know tha yellow/black is even there... its almost always folded up and covered with tape in tha motor harness near tha plug....
Last edited by TLW; 06/15/16 12:47 AM.
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11668898
06/15/16 03:50 PM
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Joined: Apr 2015
Posts: 243
Cole P
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i have a quicksilver 3000 series throttle. On the bottom of the shaft handle there is a black button (handle is black as well so it's kinda hard to see). You push the button in and move the lever forward. This keeps the gears in neutral while giving a little throttle to help start, this is the "cold start feature". In addition my boat does have a key primer; however, using that alone will not start the outboard.
My dads 225 Merc Pro XS has a Mercury throttle with cold start as well. On his the "M" logo on the bottom of the throttle handle can be pressed in to cold start. He didn't even know about it lol.
Last edited by Cole P; 06/15/16 03:57 PM.
Cole Porter
Private Water Fishing P: (214) 871-0044 C: (214) 460-7630 E: cporter@privatewaterfishing E: info@privatewaterfishing
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11669068
06/15/16 04:57 PM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
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Posts: 2,848 |
thats fast idle thingy.. thought thats what ya meant... I'll say it one more time... unless someone has "rewired" tha primer (enrichner) circuit pushin' tha key does nothin' to put fuel in tha motor.. pushin' tha key will ONLY ENERGIZE THA YELLOW/BLACK WIRE, NOTHING ELSE... so has yours been done like i described above?... look for tha TWO yellow/red wires on tha same pole on tha soleniod.. how do you know its adding fuel?.. can't be seen or heard?
if you are just a little bit mechanical i can give ya an address for an oem manual if you want.. will tell ya 'bout anything ya wanna know...
tha tpi would be tha first thing i'd test and/or adjust back to tolerance if its outta whack....
Last edited by TLW; 06/15/16 06:34 PM.
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Re: 95 Mercury 175 EFI 2.5 issues
[Re: Cole P]
#11669448
06/15/16 07:37 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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That year has a temp sensor (port cylinder head) that signals the ECU to give it more fuel until the motor warms up. Years ago I found out by not connecting this sensor. Motor would flood because of so much fuel.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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